Abstract
We briefly review the duality between gauge theories and strings. The examples of the duality are presented at the level of supergravity and classical string approximations. The role of the hidden integrability is discussed.
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Acknowledgements
We are grateful for A. Belitsky, V. Braun, G. Korchemsky for the collaboration on the issues considered in the review. We also thank A. Gerasimov, A. Tseytlin, K. Zarembo, A. Marshakov, A. Mironov, A. Morozov, N. Nekrasov, Yu. Makeenko for sharing their insights on this subject. The work has been supported in part by CRDF grant RUP2-261-MO-04, and RFBR grant 04-011-00646.